Method for Producing Carbonates

Abstract

The object of the present invention is to provide a method for producing carbonates capable of effectively and easily forming carbonates shaped to have an orientational birefringence and an aspect ratio greater than 1 as well as capable of controlling the particle size. For this end, it is a method of which a metallic ion source containing at least one selected from Sr 2+ ions, Ca 2+ ions, Ba 2+ ions, Zn 2+ ions, and Pb 2+ with a carbonate source in a solution to thereby produce carbonates shaped to have an aspect ratio greater than 1, and the method include increasing the number of carbonate particles and increasing the volume of carbonate particles.

1 . A method for producing carbonates comprising:
 increasing the number of carbonate particles, and   increasing the volume of the carbonate particles,   
       wherein a metallic ion source containing at least one selected from Sr 2+  ions, Ca 2+  ions, Ba 2+  ions, Zn 2+  ions, and Pb 2+  ions is reacted with a carbonate source in a solution to thereby produce carbonates shaped to have an aspect ratio greater than 1. 
     
     
         2 . The method for producing carbonates according to  claim 1 , wherein the metallic ion source is reacted with the carbonate source in a solution by a single-jet method. 
     
     
         3 . The method for producing carbonates according to  claim 1 , wherein the metallic ion source is reacted with the carbonate source in a solution by a double-jet method. 
     
     
         4 . The method for producing carbonates according to  claim 1 , wherein in the increasing the number of the carbonate particles, the number of moles of the metallic ion source to be reacted is equal to the number of moles of the carbonate source; in the increasing the volume of the carbonate particles, the number of moles of the metallic ion source to be reacted is equal to the number of moles of the carbonate source; and the number of moles of the metallic ion source to be reacted in the increasing the volume of the carbonate particle is greater than the number of moles of the metallic ion source in the increasing the number of the carbonate particles. 
     
     
         5 . The method for producing carbonates according to  claim 1 , wherein in the increasing the number of the carbonate particles, the metallic ion source is reacted with the carbonate source such that the number of moles of the metallic ion source (a) is greater than the number of moles of the carbonate source (b) to produce carbonate particles, and in the increasing the volume of the carbonate particles, the carbonate source is reacted with the metallic ion source such that the number of moles of the carbonate source is greater than the difference between the number of moles of the metallic ion source (a) and the number of moles of the carbonate source (b) to increase the volume of the carbonate particles. 
     
     
         6 . The method for producing carbonates according to  claim 1 , wherein the carbonate source to be reacted in the increasing the number of the carbonate particles and the carbonate source to be reacted in the increasing the volume of the carbonate particles are the same compound. 
     
     
         7 . The method for producing carbonates according to  claim 6 , wherein the increasing the number of the carbonate particles comprises adding at least any one of the metallic ion source and the carbonate source to the solution having a temperature of −10° C. to 40° C. at an adding rate of 0.01 mL/minute to 1,000 mL/minute to be mixed in the solution. 
     
     
         8 . The method for producing carbonates according to  claim 7 , wherein the increasing the volume of the carbonate particles comprises adding at least any one of the metallic ion source and the carbonate source to the solution under a condition of a temperature higher than the reaction temperature in the increasing the number of the carbonate particles and an adding rate of 0.01 mL/minute to 1,000 mL/minute to be mixed. 
     
     
         9 . The method for producing carbonates according to  claim 1 , wherein the adding rate and the adding time of the carbonate source are controlled in each of the increasing the number of the carbonate particles and the increasing the volume of the carbonate particles to be reacted with the metallic ion source. 
     
     
         10 . The method for producing carbonates according to  claim 9 , wherein in the increasing the number of the carbonate particles, the adding rate of the carbonate source is 300 mL/minute to 2,000 mL/minute, and the adding time is 10 seconds to 30 minutes; and in the increasing the volume of the carbonate particles, the adding rate of the carbonate source is less than 300 mL/minute and the adding time is 0.5 hours or more. 
     
     
         11 . The method for producing carbonates according to  claim 9 , wherein the carbonate source is carbon dioxide gas. 
     
     
         12 . The method for producing carbonates according to  claim 9 , wherein the metallic ion source-containing solution is maintained at a temperature of −10° C. to 40° C. in the increasing the number of the carbonate particles. 
     
     
         13 . The method for producing carbonates according to  claim 9 , wherein the reaction temperature in the increasing the volume of the carbonate particles is higher than the reaction temperature in the increasing the volume of the carbonate particles. 
     
     
         14 . The method for producing carbonates according to  claim 9 , wherein the metallic ion source is a metallic hydroxide. 
     
     
         15 . The method for producing carbonates according to  claim 1 , wherein the metallic ion source comprises at least one selected from NO 3   − , Cl − , and OH − . 
     
     
         16 . The method for producing carbonates according to  claim 1 , wherein the carbonate source comprises at least one selected from the group consisting of ammonium carbonate, sodium carbonate, sodium hydrogen carbonate, urea, and carbon dioxide gas. 
     
     
         17 . The method for producing carbonates according to  claim 1 , wherein the increasing the number of the carbonate particles comprises adding a carbonate source-containing aqueous solution to the metallic ion source-containing solution at an adding rate of 0.01 mL/minute to 1,000 mL/minute while maintaining the temperature of the metallic ion source-containing solution at −10° C. to 40° C. to be mixed with the metallic ion source-containing solution, and the increasing the volume of the carbonate particles comprises adding any one of the carbonate source-containing aqueous solution and a gas to the metallic ion-containing solution under a condition of a temperature higher than the reaction temperature in the increasing the number of the carbonate particles and an adding rate of 0.01 mL/minute to 1,000 mL/minute to be mixed. 
     
     
         18 . The method for producing carbonates according to  claim 1 , wherein the solution comprises water. 
     
     
         19 . The method for producing carbonates according to  claim 1 , wherein the solution comprises a solvent. 
     
     
         20 . The method for producing carbonates according to  claim 19 , wherein the solvent comprises at least one selected from the group consisting of methanol, ethanol, isopropyl alcohol, and 2-amino ethanol.